The Archdiocese of Washington sued in 2017 after Metro rejected an ad for its Christmas fundraising effort, which showed a biblical scene. The archdiocese argued Metro's decision violated the First Amendment. Metro pointed to its blanket policy of refusing to accept issue-oriented ads including political, religious and advocacy ads.
A lower federal court judge had also sided with Metro. The Trump administration supported the archdiocese. President Donald Trump's Supreme Court nominee Brett Kavanaugh was on the three-judge panel deciding the case but recused himself, so Tuesday's decision was 2-0.